Physics Quiz: Current Electricity Trivia Questions!
10 Questions
| Total Attempts: 3815
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Questions and Answers
- 1.Charge of 60 C passes through an electric lamp in 2 minutes. Then the current in the lamp is
- A.
0.5 A
- B.
30 A
- C.
1 A
- D.
5A
- 2.The material through which electric charge can flow easily is
- A.
Copper
- B.
Germanium
- C.
Quartz
- D.
Mica
- 3.The current flowing in a conductor is proportional to
- A.
Drift velocity
- B.
1/ area of cross section
- C.
1/no of electrons
- D.
Square of area of cross section.
- 4.A toaster operating at 240V has a resistance of 120Ω. The power is
- A.
480 W
- B.
400 W
- C.
2 W
- D.
240 W
- 5.If the length of a copper wire has a certain resistance R, then on doubling the length its specific resistance
- A.
Will remain the same
- B.
Will be doubled
- C.
Will become 1/4 th
- D.
Will become 4 times
- 6.When two 2Ω resistances are in parallel, the effective resistance is
- A.
1 Ω
- B.
2 Ω
- C.
0.5 Ω
- D.
4 Ω
- 7.In the case of insulators, as the temperature decreases, resistivity
- A.
Increases
- B.
Becomes zero
- C.
Decreases
- D.
Remains constant
- 8.
![If the resistance of a coil is 2 Ω at and α = 0.004 /, then its
resistance at is - ProProfs]( "If the resistance of a coil is 2 Ω at and α = 0.004 /, then its
resistance at is")
If the resistance of a coil is 2 Ω at and α = 0.004 /, then its resistance at is- A.
2.8 Ω
- B.
0 Ω
- C.
1.4 Ω
- D.
4 Ω
- 9.According to Faraday’s law of electrolysis, when a current is passed, the mass of ions deposited at the cathode is independent of
- A.
Resistance
- B.
Time
- C.
Charge
- D.
Current
- 10.When n resistors of equal resistances (R) are connected in series, the effective resistance is
- A.
NR
- B.
1/nR
- C.
R/n
- D.
N/R
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